Adam harpold



(No Model.)

A HARPOLD WHEBLED ROAD SGRAPER.

Patented Aug. 25, 1891 WITNESSES UNITED STATES PATENT OFFICE.

ADAM HARPOLD, OF COLTON, CALIFORNIA, ASSIGNOR OF ONE-HALF TO THOMAS M.MORAN AND GEORGE L. HUTOHINSON, OF SAME PLACE.

WHEELED ROAD-SCRAPER.

SPECIFICATION forming part of Letters Patent No.458,455, dated August25, 1891.

Application filed January '7, 1891.

To all whom it may concern;

Be it known that I, ADAM HARPOLD, a citizen of the United States,residing at Colton, in the county of San Bernardino and State ofCalifornia, have invented certain new and use ful Improvements inWheeled Road-Scrapers, of which the following is a specification.

This invention relates to road-scrapers or grading-machines; and itconsists in providing a machine of this class with a scrapingblade, aseat or platform for the driver, wheels which may be forced against theground in order to raise the scraper-blade and so discharge the loadgathered thereby, and footoperated devices arranged adjacent to thedrivers seat or platform and connected with the wheels, so that thelatter may be worked by the driver without his having to stop the team,leave his seat or platform, or in any wise use his hands, and thusrelinquish to a greater or less degree his control over the team.

It further consists in details of construction whereby the main objectof the invention is the better carried out, as will be hereinafterpointed out.

In the drawings, Figure 1 is a plan view of one form of the invention;Fig. 2, a perspective view, as seen from the rear, of a scraper havingthe invention in somewhat different form applied thereto; Fig. 3, a topview of the'machine shown in Fig. 2.

A designates the draft-pole or tongue of the scraper, which is intendedto be drawn by two horses, and B the scraper-blade, which extendstransversely across the tongue either at right angles or somewhatinclined thereto, as may be preferred. The blade has a steel edge b, asis usual, and is braced by the rods a. The tongue A extends rearwardbeyond the scraper-blade to constitute a support A for the driver, whichsupport may be expanded to form a platform 0, as shown in Fig. 1, uponwhich the driver may stand, or be provided with a seat C, as shown inFigs. 2 and 3.

D D are the wheels mounted upon cranks e e of a shaft or shafts E at ornear the ends of the blade and preferably in rear thereof. The shaft orshafts E are secured to the rear face of the scraper-blade and arearranged to rock in the clips or bearings e. \Vhen asingle shaft or axleE is employed for the two wheels, as shown in Fig. 1, it is provided ator near the middle with a crank-arm F, which 5 5 extends under oradjacent to the platform O and is provided with a pedal or foot-piece f,arranged in convenient position for the driver to operate by his foot,so that by throwing his weight upon the arm F he can rock the shaft Eand thus cause the wheels to bear upon the ground and the scraper-bladeto be raised. The preferred construction, however, is that shown inFigs. 2 and 3, wherein each wheel has a separate crank shaft or axle E.

Each shaft is provided at its inner endthat is, near the middle of theblade Bwith a crank-arm E, which is provided with a pedal orfoot-piecef, situated in such position that the operator while seatedupon the seat C may easily reach it. By this construction the operatoris enabled to elevate one side of the scraper-blade at a time, and thuscause the load to be dumped on one side or the other, as may be desired;or, by pressing upon both pedals at the same time, to rock both shaftsand elevate the entire blade at once, as is done in the constructionshown in Fig.1. It will be observed that the arms 6 and F are soarranged that the wheelsD and the foot-pieces f move simultaneously inthe same vertical directions, so that the operator has only to throw hisweight upon one of the foot-pieces in order to elevate the blade, nolifting or sidewise movements being required, which movements must beperformed by hand, and hence to a certain degree diminish the driverscontrol over his team.

In connection with the crank shaft or axle I E and the arm F thereof itis advantageous to employ a stop to limit the extent to which the arm Fshall be thrown down, so that it shall not pass out of the reach andcontrol of the operator. Such a stop is formed by the rod G, providedwith a head or arm g, arranged in the path of the arm F, so that whenthe arm F has been depressed far enough to cause the blade to be raisedto dump the load such arm will come in contact with the stop g and bearrested thereby. 10o

As it sometimes happens that it is desirable to raise the blade to anunusual height, the stop head or arm is made so that it can be moved outof the way of the arm F, and while this may be accomplished in variousways that shown is believed to be the most simple and effective. Itconsists in arranging the rod Gr vertically and in providing it with acrank arm or handle H, by which it may be turned on its longitudinalaxis, so as to carry the head or arm g to one side of the crank-arm F.When the rod G is so turned, the arm F may be pressed down until thefoot-piece f comes in contact with the ground.

In moving .the scraper from place it is usually supported entirely uponthe wheels D, and in order to hold the wheels permanently in engagementwith the ground the same stops 9 are made use of, the arms F, however,in this case resting below the stop arms or heads and bearing upwardagainst them. This position of parts is secured by first turning therods G so that the arms F may be forced down past the arms g, and thenwhile the arms F are in this depressed position turning the rods G so asto bring the stop-arms 9 over the arms F. The rods G are extended upwardin front of the driver and have their upper ends supported in a bracketor standard I, rising from the part A of the draft-tongue or pole.

A scraper having the invention described applied to it can be usedcontinuously-that is, it is not necessary to stop the scraper in orderto dump the accumulated load, and at the same time it permits theoperator to ride, thus reducing his labor while adding his weight tothat of the machine, which can be made correspondingly lighter. Byarranging the wheels D in rear of the blade they are brought intocontact with the surface of the ground which has been smoothed by theblade when they are depressed to dump the load, and thus they travelmore smoothly and easily than they would were they infront of or at thesides of the blade, and by mounting the wheels inside of the ends of theblade it is also possible to operate the scraper close to an object likea curbstone without interfer ence from the wheels.

I claim- 1. A scraper or grading-machine having a scraping-blade, ariding-support for the operator, and a shaft or axle connected with theblade and having a crank-arm carrying a wheel and another arm extendingin the same direction as the said crank-arm and provided with afoot-piece arranged adjacent to the riding-support, whereby the operatormay by to be depressed by him in order to force thewheel against theground, substantially as shown and described.

3. A scraper or grading-machine having a scraping-blade, a draft-tonguewith a drivers seat in rear of the blade, and the wheels mounted on thetwo separate cranked axles, each of which axles has an arm, one oneither side of the drivers seat, provided with a footpiece,substantially as shown and described.

4:. In a scraper or grading-machine, the 00111-' bination of the blade,a riding-support for the operator, a wheel mounted on a cranked axle, anarm projecting from the said axle and having a foot-piece adjacent tothe said support, which on being pressed upon by the operator forces thewheel against the ground and raises the blade, and a stop situated belowand in the path of the said arm, substantially as set forth.

5. In ascraper or grading-machine, the combination of the blade, a wheelmounted on a cranked axle adapted to be forced against the ground toelevate the blade, an arm projecting from the axle, and a stop deviceconsisting of a rod provided with an arm or'head adapted to be movedinto and out of the path of the arm and with an operating-handle,substantially as shown and described.

6. Inascraper or grading-machine, the combination of the blade, a wheelmounted on a cranked axle adapted to be forced against the ground toelevate the blade, an arm projecting from the axle, and a movable stoparranged to be moved into and out of the path of the arm and servingwhen in the path of the arm to limit its movement when moved to forcethe wheel against the ground and to limit its movement in its oppositedirectionand hold the wheel depressed when the arm has been thrown tothe opposite side of the stop, substantially as shown and described.

In testimony whereof I afiix my signature in presence of two witnesses.

ADAM HARPOLD.

Witnesses:

E. D. ROBERTS, S. WEATHERSHOLT.

